Mirror neurons differentially encode the peripersonal and extrapersonal space of monkeys.

Full Abstract

Actions performed by others may have different relevance for the observer, and thus lead to different behavioral responses, depending on the regions of space in which they are executed. We found that in rhesus monkeys, the premotor cortex neurons activated by both the execution and the observation of motor acts (mirror neurons) are differentially modulated by the location in space of the observed motor acts relative to the monkey, with about half of them preferring either the monkey's peripersonal or extrapersonal space. A portion of these spatially selective mirror neurons encode space according to a metric representation, whereas other neurons encode space in operational terms, changing their properties according to the possibility that the monkey will interact with the object. These results suggest that a set of mirror neurons encodes the observed motor acts not only for action understanding, but also to analyze such acts in terms of features that are relevant to generating appropriate behaviors.

Author information

Author/s: Caggiano, Vittorio (V); Fogassi, Leonardo (L); Rizzolatti, Giacomo (G); Thier, Peter (P); Casile, Antonino (A);

Affiliation: Department of Cognitive Neurology, Hertie Institute for Clinical Brain Research, University of Tübingen, 72076 Tübingen, Germany.

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't

Journal: Science (New York, N.Y.) (Science), published in United States. (Language: eng)

Reference: 2009-Apr; vol 324 (issue 5925) : pp 403-6

Dates: Created 2009/04/17; Completed 2009/04/29;

PMID: 19372433, status: MEDLINE (last retrieval date: 4/29/2009, IMS Date: 29 Apr 2009 00:00:00)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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